Location information obtaining method and location information obtaining apparatus

Abstract

A location information obtaining apparatus of a vehicle includes a navigation device configured to obtain first GPS information using at least one of a GPS navigation and a DR navigation, a map matching feedback module configured to feedback second GPS information generated by map matching between the first GPS information and map data to the navigation device, and an application device configured to determine a current location of the vehicle based on the first GPS information received from the navigation device.

What is claimed is: 
     
         1 . A location information obtaining apparatus of a vehicle, the location information obtaining apparatus comprising:
 a navigation device configured to obtain first global positioning system (GPS) information using at least one of a GPS navigation using a GPS signal and a dead reckoning (DR) navigation using speed information and direction information of the vehicle;   a map matching feedback module configured to feedback second GPS information generated by map matching between the first GPS information and map data to the navigation device; and   an application device configured to determine a current location of the vehicle based on the first GPS information received from the navigation device,   wherein an activation of the map matching feedback module is controlled according to a location in a GPS shaded section of the vehicle or a driving distance of the vehicle in the GPS shaded section, and   wherein the navigation device is further configured to generate third GPS information using the first GPS information and the second GPS information when the map matching feedback module is activated, and transmit one of the first GPS information and the third GPS information to the application device according to whether the map matching feedback module is activated.   
     
     
         2 . The location information obtaining apparatus of  claim 1 , wherein the map matching feedback module is further configured to be activated when the vehicle enters the GPS shaded section and then drives more than a predetermined distance within the GPS shaded section, and configured to be deactivated when the vehicle is out of the GPS shaded section. 
     
     
         3 . The location information obtaining apparatus of  claim 2 , wherein the navigation device is further configured to use the DR navigation to obtain the first GPS information when the vehicle enters the GPS shaded section. 
     
     
         4 . The location information obtaining apparatus of  claim 3 , wherein when the map matching feedback module is activated, the navigation device is further configured to obtain the third GPS information by correcting the first GPS information using the second GPS information, and configured to transmit the third GPS information to the application device. 
     
     
         5 . The location information obtaining apparatus of  claim 3 , wherein the navigation device is further configured to transmit the first GPS information to the application device when the map matching feedback module is deactivated. 
     
     
         6 . The location information obtaining apparatus of  claim 1 , wherein the application device is further configured to determine the current location of the vehicle on the map data by map matching between the first GPS information received from the navigation device and the map data. 
     
     
         7 . The location information obtaining apparatus of  claim 6 , wherein the application device is configured to determine whether the vehicle enters the GPS shaded section and the driving distance driven by the vehicle within the GPS shaded section based on the GPS information and the map data received from the navigation device. 
     
     
         8 . The location information obtaining apparatus of  claim 6 , wherein the activation of the map matching feedback module is controlled according to presence or absence of a junction in the GPS shaded section and a distance between the vehicle and the junction. 
     
     
         9 . The location information obtaining apparatus of  claim 8 , wherein the map matching feedback module is configured to be deactivated when the junction exists in the GPS shaded section and the vehicle is located within a predetermined distance from the junction. 
     
     
         10 . The location information obtaining apparatus of  claim 8 , wherein the application device is configured to determine whether the junction exists in the GPS shaded section based on the first GPS information received from the navigation device and the map data, and configured to determine the distance between the junction and the vehicle. 
     
     
         11 . The location information obtaining apparatus of  claim 1 , further including:
 a sensor device configured to detect wheel speed and direction of the vehicle,   wherein the navigation device is configured to obtain speed information and direction information of the vehicle based on information detected by the sensor device.   
     
     
         12 . The location information obtaining apparatus of  claim 1 , wherein the GPS shaded section is a tunnel or an underpass section. 
     
     
         13 . A taxi service providing system, comprising:
 the location information obtaining apparatus of  claim 1 ,   wherein the application device and the map matching feedback module are configured to be included in an integrated terminal of the taxi service providing system, and   wherein the integrated terminal is configured to be connected to, through a network, an operation server that provides a response to a request for a service received from a user terminal, determine whether to check dispatch call information by use of information linking a driving state of the vehicle, a user's boarding location, and heading direction information of the vehicle, determine a driving fee by use of GPS information or wheel speed information of the vehicle, and determine whether to change an output screen of the vehicle through gear state information of the vehicle.   
     
     
         14 . A location information obtaining method of a vehicle, the location information obtaining method comprising:
 obtaining first global positioning system (GPS) information using at least one of a GPS navigation using a GPS signal and a dead reckoning (DR) navigation using speed information and direction information of the vehicle;   controlling an activation of a map matching feedback module that generates second GPS information by map matching of the first GPS information and map data according to a location in a GPS shaded section of the vehicle or a driving distance of the vehicle in the GPS shaded section;   when the map matching feedback module is activated, generating third GPS information using the first GPS information and the second GPS information; and   determining a current location of the vehicle by use of one of the first GPS information and the third GPS information according to whether the map matching feedback module is activated.   
     
     
         15 . The location information obtaining method of  claim 14 , wherein the obtaining of the first GPS information includes:
 when the vehicle is located in the GPS shaded section, obtaining the first GPS information using the DR navigation.   
     
     
         16 . The location information obtaining method of  claim 14 , wherein the obtaining of the first GPS information includes:
 when the vehicle is located outside the GPS shaded section, obtaining the first GPS information using the GPS navigation.   
     
     
         17 . The location information obtaining method of  claim 14 , wherein the controlling of the activation includes:
 activating the map matching feedback module when the vehicle is located in the GPS shaded section and the driving distance driven by the vehicle within the GPS shaded section is greater than or equal to a predetermined distance; and   when the vehicle is located outside the GPS shaded section, deactivating the map matching feedback module.   
     
     
         18 . The location information obtaining method of  claim 14 , further including:
 deactivating the map matching feedback module according to presence or absence of a junction in the GPS shaded section and a distance between the vehicle and the junction.   
     
     
         19 . The location information obtaining method of  claim 18 , wherein the deactivating includes:
 deactivating the map matching feedback module when the junction exists in the GPS shaded section and the vehicle is located within a predetermined distance from the junction.   
     
     
         20 . The location information obtaining method of  claim 14 , wherein the determining of the current location includes:
 determining the current location of the vehicle on the map data through the map matching of the map data with one of the first GPS information and the third GPS information.